The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2003
Filed:
Sep. 20, 2001
Kenji Omote, Anjo, JP;
Takeshi Inuzuka, Anjo, JP;
Shigeo Tsuzuki, Anjo, JP;
Mitsuhiro Umeyama, Toyota, JP;
Hisanori Nomoto, Toyota, JP;
Yuji Iwase, Toyota, JP;
Other;
Abstract
A lubricating apparatus, for a friction engagement element that engages a rotatable member with a case includes a hub connected to the rotatable member, friction members disposed between the hub and the case, a hydraulic servo for engaging the friction members, and an oil passage for supplying lubricant from the case to the friction members. A discharge opening of the oil passage is formed at a position which is radially inward of the friction members and which is axially to a side of the friction members. The discharge opening is directed toward the friction members. A weir member for restricting escape of lubricant in the axial direction through a gap between the hub and the friction members is provided at the other axial side of the friction members. Therefore, the axial escape of lubricant exiting the friction members can be prevented by a non-contact leakage restriction that does not cause drag resistance. The radially outward stream of oil between the friction members is secured, and the friction members can be reliably cooled to remove heat generated by slip control of the friction engagement element.